Portable drill rig



une 23, 1936. L Cum-.S y 2,044,878

PORTABLE DRILL RIG Filed May 22, 1935 'planing'.

F. I .l0/WV C. Cuff/. 1 lINVENTOR ATTORNEY 'Patented .lune 23, i936UNITED STATES ron'rAnLE mum. me

John C. Curtis, Garfield Heights, Ohio, assigner to The Cleveland RockDrill Company, Cleveland, Ohio, a corporation of Ohio Application MayZ2,

12 Claims.

This invention relates broadly to rock drills, but more particularly toa portable supporting and guiding apparatus therefor.

One object of this invention is to produce an improved rock drillsupporting and guiding apparatus. p

Another object of this invention is to produce a rock drill supportingframe pivotally connected to a carrying frame ywith a simple andeii'icient mechanism operable for causing the pivotal movement of theformer relative to the latter.

Another object of this invention is to produce a drilling apparatusincluding a carrying frame having a rock drill supporting frame slidablyand;

pivotally mounted thereon, withamechanismslidable with thesupporting-frame and operable for causing the pivotal movement of thelatter.

Other objects and advantages more or less ancillary to the foregoing andthe manner in which the various objects are attained reside in thespecic construction `and aggroupment of the elements peculiar to thisstructure, in the claims of which there are assembled certain specificcombinations of parts and specic constructions z5 indicative of thescope and spirit of the invention.

In the drawing which illustrates the invention. Fig. 1 is a sideelevational view of the 'entire a`p' paratus illustrating the drillsupporting frame in one position.

ao' Fig.2 isaviewsimilartoli'ig.1,illustratingthe drill supporting framein another position.

Fig. 3 is a top -plan view of the assembly shown in Fig. 2. Fig. 4. isan enlarged cross sectional view taken $5 in a plane indicated by lineI-l in Fig. 1. Fig. 5 is an enlarged cross sectional view taken in aplane indicated by line 5--5 in Fig. 3.

Referring to the drawing in which like symbols designate correspondingparts throughout the 40 several views, Il represents a substantially U-shaped carrying frame vmade of tubular elements, and having brackets i Isecured to the end portion of the side arms thereof,l each of thebrackets being Iadapted to receive a supporting wheel I2. 45 The crossarm I3 of the carrying ,frame has secured thereto a bracket Il adaptedto plvotally receive a caster wheel Lf.

. Slidably mounted on each of the side arms of the carrying frame I0,there is a housing I6 formed 50 with an arcuated seat or stationaryjawI1. 'I'.o

the housing IGwis pivotally secured by a pin I6', a jaw I9, which isdisposed in opposition to the jaw I1 to form an opening therebetweenadapted to receive the side ann of the frame l0. Op-

55 eratively associated with the jaws l1 and "i9,

' casing 3l. Transversally disposed with respect 1935 Serial No. 22,896

2l by which there is a bolt 20 carrying a nut the jaws may be clamped tothe side arms of the frame for securing the housing I6 against slidable-movement relatively thereto. Above the jaws Il and l5, each of thehousings I6 is provided with a tapered or conical socket 22. v Rotatablymounted within the conical counterbore 22, there is a correspondinglyshaped and` centrally apertured member 23 having one end portion oi theside arms of a substantially U- shaped supporting -rame 24 weldedthereto, afording thereby a pivotal and slidable connection between thecarrying frame l0 and supporting frame 24. Disposed between the twohousings IE, there is a cross bar 25 having the end porl tions thereofreduced as at 26 to form a shoulder 21 in abutting engagement with themembers- 23, the reduced portion 26 extending through the A latter andthe housing I6 to receive a nut 28 by which the members 23 may beclamped within their respective socket 22 against rotation relativelythereto. One of the housings l 6 is provided with an upwardly extendingprojection 29 having a relatively small casing 30 pivotally secured tothe free end portion thereof by a nut 3|. This casing is formed with acylindricalilat bottom bore 32 having a worm gear 33 rotatable therein,and provided with longitudinally disposed bore 34 Dadapted to receivethe shank 35 of a screw 36. This shank ls locked against rotationrelative to the gear 3l by a key 21, and has,the outer end portionthereof extending through the casing 3u to receive a nut 36, by whichthe screw is locked against longitudinal movement relative to the 35tothe bore 32, the casing I6 is formed with a relatively smaller bore 3!having a worm lll rotatable therein in operative engagement with the Ateeth of the worm gear 33. This worm has one square end portionprotruding from the casing Y 36 to receive a crank handle 4I by whichthe worm may berotated. The screw 36 is rotatably mounted Vthrough astationary nut 42, rigidly secured within one end portion of a tube I3.The other end of the tube 43 is pivotally connected to the upper portionof one of the side arms of the frame 24 by a suitable connection 44.

Pivotallv secured to the supporting frame 2l by a connection 45,thereisadrilling mechanismcom- `prising Aan elongated `frame 46 having afeeding 50 i mechanism contained therein and capable of impartingfeeding motion to a rock drill 41, which is slidably mounted on theelongated frame 46.

In the operation of the apparatus, when it is desired to slide the drillsupporting frame 24 on the vcarrying frame Ill, the nuts 2| may beloosened, thus loosening the jaws l1 and I9 of the housings i6, andpermitting the slidable movement ofthe latter on the side arms of thecarrying frame I0. In this instance, the jack mechanism being carried byone of the housings IB and the supporting frame 24, will slide with thelatter. When it is desired to cause the pivotal movement of thesupporting frame, the nuts 28 may be loosened, thus permitting therotation of the members 23 relative to the conical counterbores orsockets 22. By operating the crank handle 4|, rotation may be impartedto the screw 36 due to the rotation of the worm 4D and worm gear 33,thus causing the longitudinal movement of the screw 36 into or out ofthe tube 43 and the consequential upward or downward pivotal movement ofthe supporting frame 24.

From the foregoing, it will be seen that due to the no vel method ofsecuring the jacking mechanism to one of the connections between theframes I and 24, the jackingv mechanism Ais slidable with the latter andconsequently is always inoperable position irrespective of theslidstrictive or confining and it is to be further understood thatvarious rearrangements of parts and modiiication of structural detailmay be resorted to without departing from the scope or spirit o theinvention as herein claimed.

I claim: i

1. In a portable drill rig, the combination of a substantially U-shapedcarrying frame, connections slidably carried by the side arms of saidframe, a substantially U-shaped tool supporting frame pivotally andslidably secured to said carrying frame by said connections, and amechanism carried by one of said connections for slidable movementtherewith and including a screw threaded element pivotally connected tosaid tool supporting frame and operable for causing the Pivotal movementof thelatter relative to said carrying frame.

2v. In a portable drill rig, the combination of a carrying frame, asubstantially U-shaped tool supporting frame, connections carried bysaid carf rying frame, each o! said connections comprising carryingframe including two side members dis-` posed in parallel alignment, aconnection slidably mounted on each of said side members, a toolsupporting frame connected by said connections to said carrying framefor slidable and pivotal movement between said'side members', a mecha-`lnism carried by one of said connections for slidable movementtherewith, said mechanism including a screw threaded element operativelyconnected to said supporting framefor imparting.

pivotal movement thereto, and means included in said connections forlocking said supporting frame and consequently said mechanism againstslidable movement relative to said carrying frame.

4. In a portable drill rig, the combination of a carrying frameincluding two side members disposed in parallel alignment, a connectingmember slidably mounted on each of said side members,

a tool supporting frame carried by said connect- 5 ingv members forslidable movement therewith, a bearing within each of said connectingmembers by which said supporting frame is pivotally connected to saidcarrying frame, and a mechanism pivotally carried by one of saidconnecting members for slidable movement therewith, said mechanismincluding telescopically mounted elements one associated with saidsupporting frame and operable for imparting pivotal movement theretoirrespective of the sliding movement thereof.

5. In a portable drill rig, the combination ofa carrying frame includingtwo side members, a connection slidably mounted on each of said sidemembers, a tool supporting frame including -two side elements, one endof each said side elements being slidably and pivotally connected bysaid connections to said side members, and a mechanism associated withsaid tool supporting frame operable for imparting pivotal movementthereto, said mechanism being carried by one of said connections forslidable movement therewith relative to said carrying frame.

6. In a portable drill rig, the combination of a carrying frame,bearings carried by said frame.

a substantially U-shaped tool supporting member pivotally connected bysaid bearings to said carrying frame, a mechanism carried by one of saidbearings including telescopically mounted elements one associated withsaid supporting member and operable for imparting pivotal movementthereto, and means forming a part of said bearings for holding saidmember in adjusted position.

7. In a portable drill rig, the combination of a carrying frame,bearings carried by said frame, a tool supporting frame, a drill carriedby one end portion of said supporting frame, the other end portion ofsaid supporting frame being pivotally connected to said carrying frameby said bearings, and a mechanism carried by one of said bearingsassociated with said tool supporting frame for normally preventing thepivotal movement thereis of, said mechanism being selectively operablefor imparting pivotal movement to said supporting frame.

8. In a portable drill rig, the combination of a carrying frameincluding two side arms, an individual connecting member carried by eachof said side arms, a. bearing within each of said connecting members, a-tool supporting frame pivotally connected to said carrying frame byeach of said bearings, and a mechanism including a duality oftelescopically mounted elements one pivotally connected to one or said.connecting members above said bearing and the other pivotally connectedto said supporting frame, said mechanism 60 being operable for impartingpivotal movement to said supporting frame.

9. In a portabledrill rig, the combination of a carrying frame includingtwo side arms, an individual connecting member carried by each of said65 side arms, a bearing within each of said members.

a tool supporting frame having a drill carried by one end portionthereof, the other end portion of said supporting frame being pivotallyconnected' by said bearings to said carrying frame, and a 70 mechanismincluding a duality of telescopically mounted elements one connected toone of said connecting membersiand the other connected to saidsupporting frame near the drill carrying end portion thereof, saidmechanism being operable 75 for imparting pivotal movement to saidsupporting frame.

10. In a portable drill rig, the combination of a carrying frameincluding two side arms, a connecting member carried by each of saidside arms, a bearing within each of said members, a tool supportingframe having a drill carried by one end portion thereof, the other endportion of said supporting frame being pivotally connected to saidcarrying frame by said bearings, a brace between one of said connectingmembers and the drill carrying end portion of said supporting frame,said brace normally preventing the pivotal movement of said supportingframe, and means operable for selectively varying the length of saidbrace, im parting thereby pivotal movement to said supporting frame.

11. In a portable drill rig, the combination of a .carrying frameincluding two side members, an

individual connecting element carried by each of `oisaid. bearings, anda mec of said connecting elements'associated with said 5 said sidemembers, a bearing within each of said connecting elements, a toolsupporting frame pivotally connected tosaid carrying trame by eachcarried by one tool supporting frame for normally preventing the pivotalmovement thereof said mechanism being operable for imparting pivotalmovement to said supporting frame.

12. In a portable drilling rig, the combina-v 10 tion of a carryingframe including two side members, a connecting element carried by eachof said side members, a tool supporting frame pivotally connected tosaid carrying frame by said connecting elements, a mechanism 'carried byat 15 least one of said connecting elements associated with said toolsupporting frame for imparting pivotal movement thereto, and means forlocking said frames against pivotal movement.

JOHN C. CURTIS. 20

